Soldering iron handle



FIG. 1 is a front, top and right side perspective view of a soldering iron handle, showing my new design;

FIG. 2 is a right side elevational view thereof, the side opposite, top and bottom being identical in appearance;

FIG. 3 is a front elevational view thereof; and

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a soldering iron handle, substantially as shown and described. 